hg clean does not seem to exist, which kinda bothers me. Is this a feature that Mercurial doesn\'t have or did they just name it differently?
The extension is already included in mercurial, but you still have to activate it.
It's as simple as creating a .hgrc file in your home directory (e.g. Win 7: C:\Users\«yourusername»\.hgrc
) and adding the following content to that file:
[extensions]
purge =
(Home directory is ~/.hgrc
for most other desktop operating systems (Unix, Gnu/Linux, Mac osx, BSD, etc.)